Resilient corner bead

ABSTRACT

A CORNER BEAD FOR EXTERNAL WALL CORNERS AND CORRESPONDING CAPS FOR WALL ENDS FORMED OF A RESILIENT, REINFORCED SYNTHETIC RESIN. THE CORNER BEAD WRAPS ABOUT THE WALL CORNER TO PROTECT THE SAME AGAINST SHOCKS AND IS CARRIED IN SLOT-LIKE SOCKETS IN EACH WALL SECTION WHEREINTO EDGE FLANGES OF THE CORNER BED EXTEND TO HOLD THE SAME IN POSITION. IN USING CORRESPONDING END CAPS FOR WALL-END PROTECTORS, THE STRUCTURE IS SIMILAR, BUT CLIPS ARE PROVIDED TO HOLD THE CAPS IN PLACE.

Feb. 2, 1971 E. KORAL 3,559,356

RESILIENT comm BEAD Filed April 19. 1968 2 Sheets-Sheet 1 P 'w'3o' G 2320 I I E. B l I r l I as l El INVENTOR.

a m Ephraim Kora! BY- TEE Ti El 2 United States Patent 3,559,356RESILIENT CORNER BEAD Ephraim Kora], Denver, 'Colo., assignor toConstruction gpecialties, Inc., Cranford, N.J., a corporation of Newersey Filed Apr. 19, 1968, Ser. No. 722,594 Int. Cl. E041? 13/06, 19/02US. Cl. 52-254 22 Claims ABSTRACT OF THE DISCLOSURE This inventionrelates to improvements in corner beads which protect the externalcorners of interior walls, and more particularly to corner beads of atough, resilient construction which are capable of withstanding asubstantial amount of abuse.

The interior walls in the rooms, and especially in the hallways of manypublic buildings such as hospitals and similar institutions, arefinished with comparatively expensive materials. Even where plasterwalls are used, the finished workmanship will be of high quality.Accordingly, it is desirable to protect the walls against unnecessarydamage. Usually, such damage as does occur in the ordinary use of thebuilding comes about through the somewhat careless use of carts, trucks,litters and similar vehicles traversing the hallways of the building,and usually, the damage occurs by the vehicle bumping an external cornerof a wall as it is making a turn from one hallway corridor to another orinto a room. If the wall happens to be of ceramic'tile, a corner tilewill be chipped or broken. If the wall is of plaster, with aconventional metal corner bead embedded therein, the bead will be dentedand some plaster about or behind the dent spalled away.

Naturally, scratches, dents and chips at such external corners inhallways are very obvious and unsightly and should be avoided wheneverpossible. Where the problem becomes serious, bumpers or rails aremounted upon the wall about the corner, but such expedients are not onlyexpensive, but also almost as unsightly as the dents or chips.

The present invention was conceived and developed to overcome theproblems set forth above, and the invention comprises, in essence, aresilient corner bead which may be aflixed to an external corner of awall and a modification thereof, a resilient cap which may be affixed toan end of a wall. The improved corner bead and cap are formed of atough, resilient material and are mounted in the converging walls in amanner which permits their yielding and flexure to a substantial shockwithout spalling or otherwise damaging them or the finished wallsections at either side of the corner bead.

Accordingly, an object of the invention is to provide a novel andimproved corner bead for an external corner of a wall, and a novel andimproved cap for a wall end. which are tough and resilient and willyield to the impact of a heavy object such as a loaded hand truck andthereafter, return to their original form and position without beingdamaged or marked.

Another object of the invention is to provide a novel 3,559,356 PatentedFeb. 2., 1971 and improved corner bead and cap which have smooth, neatlyfinished surfaces and are firm and hard When handled in an ordinarymanner.

Another object of the invention is to provide a novel and improvedcorner bead for an external corner and a cap for a wall end which canshift, as when struck a heavy blow, without damaging the adjacent wallsections, which are immune to effects of temperature variations andwhich will permit the converging wall sections to move slightly wherethere is settlement of the structure, and thereby minimize thepossibility of cracking in the wall due to excess strain at the corner.

Another object of the invention is to provide a novel and improvedcorner bead and cap which may be easily repaired or easily replaced, ifnecessary, as where they are cut or otherwise damaged by an accident ofunusual severity.

Further objects of the invention are to provide a novel and improvedcorner bead and cap construction which is simple in form andarrangement, versatile and may be adapted for use at both an externalcorner and at the end of a wall section, economical both in the basiccost and in the required labor for its installation, and generally,neat-appearing, rugged and durable components.

With the foregoing and other objects in View, all of which more fullyhereinafter appear, my invention comprises certain constructions,combinations and arrangements of parts and elements as hereinafterdescribed, defined in the appended claims and illustrated in preferredembodiments in the accompanying drawings, in which:

FIG. 1 is a sectional plan view of the corner portion of a plasteredwall, with the improved corner bead being mounted thereon in accordancewith the principles of the invention.

FIG. 2 is an isometric view of the lower portion of an external cornerof a plastered wall of a construction such as that shown at FIG. 1, buton a reduced scale, and with the corner bead being struck by a handtruck to depict a common type of accident.

FIG. 3 is an isometric sectional view of a short portion of the cornerbead per se.

FIG. 4 is an exploded isometric sectional view of a short portion of thecorner bead and of retaining devices at each side of the corner bead.

FIG. 5 is a fragmentary side elevational view of the bottom of a wallsection, as taken substantially from the indicated arrow 5 at FIG.'2 butillustrating a construction using a recessed baseboard.

FIG. 6 is a fragmentary sectional detail as taken from the indicatedline 6-6 at FIG. 5, but on an enlarged scale.

FIG. 7 is a sectional view of an end portion of a plastered wall whichis capped with a modified form of the improved corner bead, which willbe hereinafter referred to as a wall-end cap.

FIG. 8 is an isometric view of a retainer clip used with the wall-endcap shown in FIG. 7.

FIG. 9 is a fragmentary perspective view of the wallend cap installationshown at FIG. 7, but before the wall is plastered and using a dilfernttype of retainer clip, as indicated in broken lines.

FIG. 10 is an isometric view of the retainer clip per se, depicted inthe showing at FIG. 9.

FIG. 11 is a fragmentary isometric view of a corner portion of a masonrywall which is to be finished with plaster, using the improved cornerbead and illustrating further, another type of clip for holding thecorner bad in place.

FIG. 12 is a plan view of another form of clip which may be used in lieuof the clip shown at FIG. 11.

Referring more particularly to the drawing, FIGS. 1

to 6 illustrate the improved corner bead B as being mounted upon theexternal corner of a plastered wall P by securing the corner bead to thecorner studs S of the wall sections. As such, the corner bead B is anelongated member of uniform cross section, having a length correspondingto the height of the wall whereon it is mounted or a lesser height suchas chair rail height.

In cross section, its corner bead has the appearance of a partiallyfolded member. It may have a thickness of approximately one-eighth inchor less if desired, and is formed as two leg portions which are 90degrees apart. These leg portions are preferably symmetrical withrespect to a vertical, longitudinal intermediate reference plane whichwould appear as a line X at FIG. 1. Each leg portion includes anelongated face strip 20 which is approximately two inches wide and whichhas a finished outer surface which may be adapted to lie in the plane ofthe finished surface of the corresponding wall section, as indicated bythe line W at FIG. 1. These face strips 20 converge towards a commoncorner point, but they merge together at this central portion of theunit by 90- degree arcuate segment 21 having a radius of approximatelyon inch. This arcuate segment eliminates a sharp corner constructionwhich is formed by some types of metal corner beads and is betteradapted to yield to a blow by a heavy object. Arcuate segment 21 may,obviously, be provided with a greater or lesser radius of curvature andmay be used with corners which are not right angles.

A narrow, inturned otfset 22 is formed at the outward edge 23 of eachface strip 20, and a mounting flange or edge portion 24 extendsoutwardly from the inner edge 25 of each offset 22 to lie in spacedparallelism with the adjacent face strip 20. When this corner bead isused in a plastered wall construction, as illustrated, the mountingflanges 24 lie against the studs S, and the width of the offsets 22 maybe such that the face strips 20 will lie at the plane of the finishedwall surfaces W, as illustrated. In plaster-wall constructions, thiswidth will ordinarily be approximately inch if coplanar strip and wallsurface configurations are desired.

This corner bead B may be formed of any suitable fiber-reinforced, toughbut resilient, synthetic resin and is preferably, a good qualitypolyester type of resin reinforced with glass fibers. Such reinforcedresins, commercially available under the trademark Fiberglas, are verytough, strong and resilient and are thus used in the manufacture of boathulls and the like. Materials having these qualities are ideal for theimproved corner beads. The techniques of forming these and other similarplastics into finished articles are well known to the art, and in thepresent invention, the corner beads B are preferably formed in femalemolds which produce a very fine finished outer surface on the cornerbead structure. Such a surface may be smooth or may be textured to anydesired pattern. For example, a comparatively flat surface presenting arippled beaded pattern, has been found to be quite acceptable to thetrade. Because such techniques of forming the improved corner bead arecommon to many similar articles of manufacture, they need not bedescribed further. As will be apparent, however, other known or suitableresilient materials having the property of substantially full elasticrecovery from accidental deformation may be selected in accordance withthe choice of the user or manufacturer.

The corner bead may be mounted on the studs of a wall corner by simplynailing the flanges 24 in place. Plaster stops 30 may then be fittedover the mounting flanges 24 and the wall finished. However, a preferredmode of installation provides for mounting the corner bead flanges 24 insockets 32 to provide a floating fit of the corner bead upon the wallstuds. Thus, whenever the corner bead is struck y a heavy j he socketspermit the head to flex and slide without causing plaster to spall. Thatis, the fact the flanges 24 are slidable within their associated socketsor rscesses, in addition to the resilient nature of the bead or strip B,allows flexure of the bead or strip toward the underlying wall members Supon accidental impacting and subsequent returning of the bead or stripto its initial disposition, the flanges 24 initially sliding furtherinto their sockets and then returnng again following impacting. Thesockets may be formed by retainer strips R, narrow metallic strips whichare stood alongside a stud and secured thereto by nails 34. Eachretainer strip R is formed with a central longitudinal offset 35 so thatthe socket 32 is formed by an overhanging side 36 and the other side 37is nailed to the surface of the stud.

Accordingly, in the preparation of a finished plaster wall in thedesired manner, the corner bead B is placed upon an external corner andwhile held in position, the retainer strips R are nailed into place andmay leave a gap G of, for example, from one-fourth to three-eighths inchbetween the edge of the overhanging side 32 and the offset 22 of thebead. Next, the plaster stops 30 are fastened to the studs by overlayingthe retainer strips and are secured by nails in a manner not shown.Finally, the lath and plaster are applied to provide for the finishedwall surface as illustrated.

In the construction illustrated, it is to be noted that the flanges 24are not completely inserted into the sockets formed by the retainerstrips R to provide for the gap G. Likewise, the plaster stops 30 arepreferably placed over the retainer strips R in such a manner as to havetheir ends flush with the edges of the retainer strips, as illustrated,to maintain the spacing formed by the gap G. With this arrangement, thedesirable movement of the corner bead can easily occur.

A number of variations are possible in the manner in which this improvedcorner bead may be installed in different types of walls, as by nailingas heretofore mentioned. Preferably, however, slots 32 for retaining theflanges 24 will be provided. FIG. 4, an exploded fragmentary view,includes a section of a corner bead B and a retainer R at one sidethereof. Also, the figure shows a portion of a ceramic tile T having aslot 32a cut in its end. This slot will be cut in all of the end tilesto extend from the bottom to the top of the wall to receive the entireflange of the corner bead.

The construction illustrated at FIGS. 5 and 6 depicts a wall structurehaving a recessed base. This is used in the finished structure with themain finished wall portion overhanging the baseboard. Whenever a cornerbead B is mounted in a wall of this type, it will necessarily beterminated at the bottom of the wall portion above the baseboard. When,however, it is mounted into sockets, as described, it will be necessaryto restrain it against sliding and dropping downwardly. Such may beeasily accomplished with an inturned end 38 of the bottom of theretainer R as illustrated at FIG. 6.

A modified embodiment of the invention is illustrated at FIGS. 7 to 10and this embodiment provides for a wall-end cap C. Such a cap is used toprotect an end of a wall section which forms a partial division of aroom or the edge of an open archway and any other wall edge where it isnot desirable or necessary to mount a door jamb. As in the case of anexternal corner, the end of a wall section is often subjected toconsiderable abuse, especially if the wall is located in a hallwaysystem of a building where a substantial portion of the trafiic is withhand carts. Conventionally, the end of a wall is finished with a pair ofcorner beads if the wall is to be plastered, or with a special sectionof tile if it is to be masonry. The present invention contemplates inlieu of these units, the single protective end cap C made of tough,strong, and resilient plastic in substantially the same manner as thatheretofore described.

In cross section, this wall-end cap C has the appearance of a foldedmember formed as two parallel leg portions. This member is symmetricalwith respect to the vertical, longitudinal plane of the wall whichappears as a line Y at FIG. 7. In contrast with the corner bead B, thefold of 180 degrees requires an elongated end surface 40 at the centerof the cap which lies normal to the plane of the wall whereon the cap ismounted. The width of this surface 40 is sufiicient to permit the cap tocorrespond with the thickness of the finished wall as described. A 90degree arcuate segment 21a is shown at each side of this section 40.This segment 21a is illustrated as having a radius selected atapproximately one inch to provide for rounded corners at the end of thewall and to merge with side segments a at each side of the cap, whosesurfaces lie flush with the surfaces W of the opposite sides of thewall. To complete this end cap in the same manner as the corner bead, anarrow, inturned offset 22a is formed at the outward edge 23a of eachsegment 20:: and a mounting flange 24a extends outwardly from the inneredge 25a of each offset 22a to lie in spaced parallelism with theadjacent face strip 20a and in spaced parallelism with the opposingflange 24a as illustrated.

In mounting the wall-end cap C onto a stud wall such as illustrated atFIG. 7, the flanges 24a embrace the opposite faces of the terminal studS of the wall frame to place the side faces 20a outwardly therefromflush with the finished wall surface W.

In holding the end cap C, it is preferred that the mounting flanges 24abe carried in sockets 32, formed by retainer strips R, the same asheretofore described. These strips R are nailed to the opposite faces ofthe stud wall. However, in contrast with the construction illustrated atFIG. 1, the parallel flanges 24a of the wall-end cap can easily slideout of the sockets 32 unless another means for retaining the wall-endcap is provided.

Accordingly, the arrangement shown at FIG. 7 includes a stop member orclip 41 within the end cap C. This clip, as shown at FIG. 8, is formedas a flat, U- shaped, folded strip of sheet metal. Its flat, centralbase 42 carries a short upstanding leg 43 and each leg includes aninturned offset 44 and an ear 45 extending from the inner edge of theoffset. This U-shaped member is proportioned to fit within the end cap Cwith the ears 45 being adapted to embrace and lie against the oppositesides of the terminal stud S of the wall. The flanges 24a of the capthen overlie these ears. The offsets 44 are adapted to lie against orengage the end cap offsets 22a to prevent the end cap from movingoutwardly from the sockets 32. The legs 43 lie between the opposing facestrips 20a while the base portion 42 connecting the opposing legs,functions to reinforce the other portions of the clip 41.

It is contemplated that a number of these clips 41 will be fastened to aterminal stud as by nails 46 being driven through holes 47 provided inthe ears. Also, that this will be the first step in mounting an end capC onto the stud wall. The clips are slipped into position in the cap,pulled tightly against the terminal stud and nailed. Next, the retainersR will be nailed in position over the flanges 24a of the end cap and ata location which will provide for a suitable gap G between the ends ofthe flange and the offset 22a of the end cap with the end cap bearingagainst the offsets 44 of the clips 41. Next, a plaster stop will bemounted upon each wall to overlie the retainer strips R to maintain thegap G as heretofore described. The final step is to apply the lath andplaster.

FIG. 9 illustrates isometrically, a partially completed wall-end whereend cap and retainer strips have been applied and the wall section isready for the plaster stop and lath and plaster. In that figure,however, a modified retainer clip 51 is provided. This clip is formed asa U-shaped body 52 which is adapted to snugly embrace the end of thestud and to be nailed thereto, with holes 53 on the sides being providedtherefor. A ledge 54 is folded outwardly from this clip and it has awidth sufficient to snugly lie between the opposing face strips 20a andwith its inner corners 55 contacting the inner sides of the offsets 22ato prevent the end cap C from being pulled away from the stud.

A further modification of the invention is illustrated at FIG. 11 wherea corner bead B is secured to a masonry wall of the type which is to befinished by plastering. The corner bead B is held by triangular clips61, proportioned in such a manner as to have opposing corners 62 fitwithin the embrace of the face strips 20 and against the olfsets 22.These triangular clips are placed between the joints of the masonryduring erection of the wall. They will have suitable holes 63 in theirface to permit them to be better gripped by the mortar when the masonry,bricks or cinder blocks are laid up as in the manner illustrated.

The corner guard may be placed simultaneously with the erection of themasonry, while anchors 61 or 64 are slipped down and placed in mortarjoints. Thereafter, retainer strips R may be applied, or if necessary,it is possible to use a plaster stop 30 without the strips by laying theend of the stop directly over the flange 24 as in the mannerillustrated.

FIG. 12 illustrates a masonry clip 71 which may be used in lieu of theclip 61. This masonry clip is formed as a piece of flat sheet metal witha head portion having opposing corners 72 which will fit within theembrace of the face strips 20 and against offsets 22 of a corner bead B.This clip is provided with a tongue portion 73 having suitable holes 74to permit it to be better gripped by the mortar between bricks or cinder'blocks when the masonry wall is being laid.

It is quite apparent from the foregoing description that a similarretainer strip can be provided for a wall-end cap. Such a unit can bemade as a simple clip formed similar to the unit illustrated at FIG. 10,but in lieu of the body 52, a flat plate 56 shown in broken lines may beformed which can lie between the courses of masonry with the ledge 54projecting therefrom to hold the clips in place.

Whereas the apparatus and arrangements discussed hereinabove andillustrated in the accompanying drawings represent preferred forms ofthe invention, modifications and alterations may be made within thespirit and scope of the invention as defined in the appended claims. Forexample, while one material suitable for the formation of the bead orresilient member has been disclosed in detail, further suitable materialof known resilience, toughness and other qualities will become apparentto those skilled in the art and may successfully be employed in theformation of the elongate bead or resilient member without departurefrom the invention.

I claim:

1. A protected portion of a structure located where the structurenormally is vulnerable to abuse by external impacting including anunderlying structural part located at the vulnerable portion, aresilient member having a first portion located in spaced relation tothe underlying part, an outer surface on the first portion exposed tothe external impacting, and means retaining the resilient member movablyin place with respect to the underlying part, the resilient memberhaving a second portion which is engaged by the retaining means toretain the resilient member in place and which is movable with respectto the retaining means and to the underlying structural part duringflexure of the resilient member.

2. A protected portion of a structure located where the structurenormally is vulnerable to abuse by external impacting including anunderlying structural part located at the vulnerable portion, aresilient member having a portion located in spaced relation to theunderlying structural part and providing an exposed impact protectingsurface, and means retaining the resilient member movably in place withrespect to the underlying part, the re- 7 taining means comprisingrecess defining means receiving an edge portion of the resilient memberfor movement of the edge portion within the recess defining means uponimpacting of the resilient member.

3. An impact obsorbing protector arrangement including a resilientmember having a portion for location in spaced relation to an underlyingprotected member, and means for retaining the resilient member movablyin place with respect to the underlying member, the retaining meansincluding a retainer member having an integral mounting portion forsecuring the retainer member upon a supporting wall part and a furtherintegral portion extending away from the mounting portion to define aretain ing recess between the further integral portion and thesupporting wall part, said resilient member having an edge portionslidably received within said retaining recess.

4. A protected portion of a structure located where the structurenormally is vulnerable to abuse by external impacting including anunderlying structural part located at the vulnerable portion, aresilient member having a portion located in spaced relation to theunderlying structural part, and means retaining the resilient membermovably in place with respect to the underlying part, the resilientmember spaced portion defining an exposed surface protecting thesupporting structure from marrying and deterioration by impacting, theresilient member being flexible inwardly toward the underlying part uponimpacting thereof and being resiliently returnable following impacting,and wherein the resilient member includes an edge portion which isengageable by the retaining means and is slidable with respect theretoduring fiexure and return of the resilient member.

5. An impact absorbing protector arrangement including a resilientmember having a portion for location in spaced relation to an underlyingwall member, and means for retaining the resilient member movably inplace with respect to the underlying member, the resilient memberincluding first and second edge portions each slidably retained inproximity to a wall part by the retaining means, and wherein the portionof the resilient member for location in spaced relation to theunderlying wall member comprises a central portion intermediate the edgeportions, supported outwardly with respect thereto, and shaped inconformity with the underlying wall member to extend at least partlyaround the underlying wall member in spaced relation thereto, saidcentral portion being inwardly flexible upon impacting and resilientlyreturnable following impacting to cause movement of the first and secondedge portions during fiexure and return of the central portion.

6. An impact absorbing protector arrangement including a resilientmember having a first portion for location in spaced relation to anunderlying protected member, and means for retaining the resilientmember movably in place with respect to the underlying member, theresilient member having a second portion which is engageable by theretaining means to retain the resilient member means and to theprotected member during fiexure of the resilient member, the resilientmember spaced portion comprising joined, angularly disposed sections forextension about a corner, the resilient member second portion comprisingat least one edge portion retained by the retaining means, and theresilient member further comprising an offset section angularly disposedwith respect to the edge portion and supporting the joined sections forspaced relation to the underlying member.

7. The arrangement according to claim 6 further including stop means forcontacting the olfset section to prevent movement of the edge portionout of association with the means for retaining.

8. An impact absorbing protector arrangement for application to a wallend, including a resilient member having a first portion for location inspaced relation to an underlying protected member, and means forretaining the resilient member movably in place with respect to theunderlying member, the resilient member having a second portion which isengageable by the retaining means to retain the resilient member inplace and which is movable with respect to the retaining means and tothe protected member during fiexure of the resilient member, the spacedportion including first and second side sections for location onopposite sides of a wall end and a connecting portion spanning the firstand second side sections.

9. The arrangement according to claim 8 in which the resilient memberfurther includes first and second edge portions retained on the oppositesides of the wall end by the retaining means and first and secondresilient member offset sections angularly disposed with respect to thefirst and second edge portions, respectively, and supporting the firstand second side sections and connecting portion in spaced relation tothe Wall end.

10. The arrangement according to claim 9 further including stop meansfor contacting the first and second ofiset sections to prevent movementof the edge portions out of association with the means for retaining.

11. The arrangement according to claim 1 further including stop meansfor contacting the resilient member to limit movement of the resilientmember with respect to the retaining means.

12. An impact absorbing protector arrangement including a resilientmember having a first portion for location in spaced relation to anunderlying protected member, and means for retaining the resilientmember movably in place with respect to the underlying member, stopmeans for contacting the resilient member to limit movement of theresilient member with respect to the retaining means, the resilientmember having a second portion which is engageable by the retainingmeans to retain the resilient member in place and which is movable withrespect to the retaining means and to the protected member duringfiexure of the resilient member, the resilient member spaced portionbeing a central portion of the resilient member, said stop means havinga mounting for locating the stop means beneath the central portion tointeriorly contact the resilient member to limit movement thereof.

13. The arrangement according to claim 1 for employment with anunderlying wall member, wherein the resilient member includes at leastone edge portion retained by the retaining means, the retaining meansincluding a wall panel supported adjacent the resilient member and meansdefining recesses at edges of the wall panel for receiving the resilientmember edge portion for movement therein intermediate an outer surfaceof the Wall panel and an underlying wall part.

14. An impact absorbing protector arrangement including a resilientmember having a first portion for location in spaced relation to anunderlying wall member, and means for retaining the resilient membermovably in place with respect to the underlying member, the resilientmember having a second portion which is engageable by the retainingmeans to retain the resilient member in place and which is movable withrespect to the retaining means and to the underlying Wall member duringfiexure of the resilient member, the resilient member second portionincluding at least one edge portion retained by the retaining means, theretaining means including a wall panel supported adjacent the resilientmember and means defining recesses at edges of the wall panel forreceiving the re silient member edge portions for movement thereinintermediate an outer surface of the wall panel and an underlying wallpart, the wall panel including a plaster stop overlying the recesses atedges of the wall panel.

15. A protector arrangement for application to and protection of anunderlying member and including a protective member having a centralportion for support in spaced relation to the underlying member, and atleast one edge portion terminating the protective member at one sidethereof; means for retaining the edge portion of the resilient member tomaintain the resilient member in protective association with theunderlying member; and stop means located between the central portionand underlying member for contacting the protective member andpreventing movement of the edge portion out of associationw ith theretaining means.

16. The arrangement according to claim 15' wherein the central portionof the protective member is supported outwardly of the edge portion todefine a space between the central portion and the underlying member,and the stop means includes means located within said space for abuttingthe protective member upon movement of the edge portion toward saidspace.

17. The arrangement according to claim 16, wherein the stop meansincludes mounting means for securing the stop means to the underlyingmember, and means extending away from the mounting means for contactingthe protective member.

18. The arrangement according to claim 17, for employment with anunderlying wall end, wherein the mounting means includes first andsecond parts aflixable to pposite sides of the wall end, the contactingmeans including shoulders engageable with the protective member adjacentsaid first and second parts.

19. The arrangement according to claim 18 for employment with anunderlying wall member constructed of laid-up wall parts joined bymortar, wherein the mounting means includes means for extension into themortar between adjacent wall parts.

20. An impact absorbing wall protective member for use in a protectorarrangement with wall mounted retainers engageable with edges of theprotective member to retain the member in place while permittingmovement of the edges with respect to the retainers and an underlyingwall part; the protective member being of tough, resilient, dentresistant synthetic plastic and including edge mounting portions forretention by the retainers to be supported adjacent underlying wallparts, and an outwardly protruding central protecting portion to besupported in spaced relation to an underlying, protected wall part, thecentral portion being normally exposed to external impacting forces of amagnitude sufiicient to damage an unprotected wall part, being flexiblewhen impacted externally to absorb forces applied thereto and beingsubstantially fully elastically recoverable after impacting to assumethe initial disposition thereof, the edge portion being connected withthe central portion for movement upon flexure and recovery of thecentral portion during and following impacting to facilitate saidflexure and recovery, thereby aiding the absorption of forces applied tothe central portion and enhancing the abuse resistant nature of theprotective member.

21. The protective member according to claim 20, wherein the edgeportions define flange means for aiding flexure and recovery of thecentral portion, the flange means being slidable on surfaces duringflexure and return of the central portion.

22. The protective member according to claim 21, wherein the flangemeans extend away from the central portion and are slidable away fromthe central protion upon flexure of the central portion during impactingand toward the central portion upon recovery of the central portionfollowing impacting.

References Cited UNITED STATES PATENTS 1,127,329 2/1915 Wegenka 16-852,686,943 8/1954 Kunkel 49-470X 2,138,470 11/1938 Bischof 52255X2,796,641 1/1957 Wollaeger 52-255 3,255,561 6/1966 Cable 52-288X3,293,815 12/1966 Waldron 52-287 3,391,509 7/1968 Fruman 52 255X3,415,019 12/1968 Andersen 52 288X PRICE 0. FAW, JR., Primary ExaminerUS. Cl. X.R.

mg UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION PatentNo.3,559,356 Dated February 2, 1971 lnv nt fl Ephraim Koral It is certifiedthat error appears in the above-identified patent and that said LettersPatent are hereby corrected as shown below:

Column 2, line 58, "in" should be at line 69 "bad" should be bead Column3, line 24, "on" should be one Column 4, line 3, "rscesses" should berecesses line 9 "ng" should be ing Column 5, line 11, after "shown"insert formed Column 7, line 5, "obsorbing" should be absorbing line 26,"marrying" should be marring line 58, after "member" insert in place andwhich is movable with respect to the retaining Column 9 line 5, "tionwith" should be tion with Column 10, line 19 "protion" should be portionColumn 10, line 30 after "2,796 ,641" should be 6/1957 Signed and sealedthis 28th day of March 1 972.

(SEAL) Attest:

EDWARD M.FLETCHER,JR. ROBERT GOTTSCHALK Attesting Officer Commissionerof Patents

